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The early effort fared poorly, since the uninsulated telegraph lines were susceptible to atmospheric and other electrical interference.
In 1925, AT&T decided that WEAF and its embryonic network were incompatible with the company's primary goal of providing a telephone service.
In 1927, NBC moved its operations to 711 Fifth Avenue in Manhattan, occupying the upper floors of a building designed by architect Floyd Brown.C., in 1923, attempted to transmit audio between cities via low-quality telegraph lines.AT&T refused outside companies access to its high-quality phone lines.The network is part of the Big Three television networks.NBC is sometimes referred to as the "Peacock Network", in reference to its stylized peacock logo, introduced in 1956 to promote the company's innovations in early color broadcasting. Founded in 1926 by the Radio Corporation of America (RCA), NBC is the oldest major broadcast network in the United States.